Oh, you mean a father figure that's non-biological, married to a parent?
I have a step father its basically a non biological parent who is married to my mom
my parents are still married so i will never find out what it's like to have a stepfather
A stepfather or stepdad is a non-biological father figure who is married to one's parent.
мои родители все еще женаты, так что я никогда не узнаю, каково это - иметь отчима
Отчим - это небиологическая фигура отца, состоящая в браке с одним из родителей.